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The following figure shows how to position strain gage resistors in an axial configuration for the full-bridge type III.
The full-bridge type III configuration only measures the axial configuration.
The following equation converts voltage ratios to strain units for full-bridge type III configurations.
where Vr is the voltage ratio that virtual channels use in the voltage-to-strain conversion equation, GF is the gage factor, and v is the Poisson's ratio.